Auto login, and click particular links after login with php

i have a web control panel and need somebody to write a script to 1. login 2. click a link 3. submit some data after clicking the login. 1, 2, 3 must be written as functions and the whole login session must be stored as a class data (that means the login is done by instantiate a class instance and the session is saved in that -- if it is the session is reset the script need to auto login again and get a new session) the program need to be in PHP and use guzzle as the http client framework, unless you have a very strong reason to use another framework.